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Working mode adjustment method and USB controller

A working mode and controller technology, applied in the electronic field, can solve problems such as the inability to control the state of the USB controller, and achieve the effect of reducing power consumption and power consumption

Active Publication Date: 2018-09-18
QINGDAO HISENSE MOBILE COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method and device for adjusting the working mode, which is used to solve the problem in the prior art that the state control of the USB controller cannot be performed when the peripherals mounted on the embedded device cannot be plugged in.

Method used

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  • Working mode adjustment method and USB controller
  • Working mode adjustment method and USB controller
  • Working mode adjustment method and USB controller

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Embodiment Construction

[0020] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] The method for adjusting the working mode in the embodiment of the present invention can be applied to an embedded device. When applied to an embedded device, the structure of the embedded device is as follows: figure 1 As shown, including a CPU (Central Processing Unit, central processing unit), a USB controller located in the CPU, a USB HUB (hub) connected to the USB controller, a USB HUB outputting at least two USB ports, and l...

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Abstract

The invention relates to the technical field of electronics, in particular to a working mode adjustment method and a USB controller, and aims to solve the problem that state control of the USB controller cannot be performed when peripherals mounted on an embedded device cannot be extracted and inserted in the prior art. The method comprises the steps of judging a vbus switch state of each USB portafter the USB controller determines that all USB ports set to be in a manual mode exit from the manual mode; and when the vbus switch state of each USB port is determined to be on, adjusting a working mode to a device mode by the USB controller. The control on the working mode of the USB controller when the embedded device comprises the peripherals and the peripherals cannot be extracted and inserted is realized, and the power consumption of the embedded device is reduced.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a method for adjusting working modes and a USB controller. Background technique [0002] With the development of USB technology, PCs (Personal Computers, personal computers) and peripheral devices can connect devices with various data transmission speeds together in a simple manner and with moderate manufacturing costs. Moreover, the most common connection method is to connect the device to a PC through a USB (Universal Serial Bus, Universal Serial Bus), and perform data exchange under the control of the PC. But this convenient exchange method, once the PC is left, the USB ports cannot be used to operate between the devices. With the development of technology, there are embedded devices that support otg (On-The-Go) function. When the embedded device is in otg mode, it can be connected to the peripheral of the USB port; at the same time, when it is in host mode, it can act as...

Claims

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Application Information

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IPC IPC(8): G06F13/16
CPCG06F13/1668Y02D10/00
Inventor 张乃风赵廷法
Owner QINGDAO HISENSE MOBILE COMM TECH CO LTD